rustdesk/lib/pages/settings_page.dart

import 'package:settings_ui/settings_ui.dart';
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import '../common.dart';
import '../models/model.dart';
import 'home_page.dart';

class SettingsPage extends StatelessWidget implements PageShape {
  @override
  final title = "Settings";

  @override
  final icon = Icon(Icons.settings);

  @override
  final appBarActions = [];

  static const url = 'https://rustdesk.com/';

  @override
  Widget build(BuildContext context) {
    return SettingsList(
      sections: [
        SettingsSection(
          title: Text("Common"),
          tiles: [
            SettingsTile.navigation(
              title: Text(translate('ID Server')),
              leading: Icon(Icons.cloud),
              onPressed: (context) {
                showServer();
              },
            ),
          ],
        ),
        SettingsSection(
          title: Text("About"),
          tiles: [
            SettingsTile.navigation(
                title: Text("Version: " + version),
                value: InkWell(
                  onTap: () async {
                    const url = 'https://rustdesk.com/';
                    if (await canLaunch(url)) {
                      await launch(url);
                    }
                  },
                  child: Padding(
                    padding: EdgeInsets.symmetric(vertical: 8),
                    child: Text('Support',
                        style: TextStyle(
                          decoration: TextDecoration.underline,
                        )),
                  ),
                ),
                leading: Icon(Icons.info)),
          ],
        ),
      ],
    );
  }
}

void showServer() {
  final formKey = GlobalKey<FormState>();
  final id0 = FFI.getByName('option', 'custom-rendezvous-server');
  final relay0 = FFI.getByName('option', 'relay-server');
  final key0 = FFI.getByName('option', 'key');
  var id = '';
  var relay = '';
  var key = '';
  DialogManager.show((setState, close) {
    return CustomAlertDialog(
        title: Text(translate('ID Server')),
        content: Form(
            key: formKey,
            child: Column(mainAxisSize: MainAxisSize.min, children: <Widget>[
              TextFormField(
                initialValue: id0,
                decoration: InputDecoration(
                  labelText: translate('ID Server'),
                ),
                validator: validate,
                onSaved: (String? value) {
                  if (value != null) id = value.trim();
                },
              ),
              /*
                  TextFormField(
                    initialValue: relay0,
                    decoration: InputDecoration(
                      labelText: translate('Relay Server'),
                    ),
                    validator: validate,
                    onSaved: (String value) {
                      relay = value.trim();
                    },
                  ),
                  */
              TextFormField(
                initialValue: key0,
                decoration: InputDecoration(
                  labelText: 'Key',
                ),
                validator: null,
                onSaved: (String? value) {
                  if (value != null) key = value.trim();
                },
              ),
            ])),
        actions: [
          TextButton(
            style: flatButtonStyle,
            onPressed: () {
              close();
            },
            child: Text(translate('Cancel')),
          ),
          TextButton(
            style: flatButtonStyle,
            onPressed: () {
              if (formKey.currentState != null &&
                  formKey.currentState!.validate()) {
                formKey.currentState!.save();
                if (id != id0)
                  FFI.setByName('option',
                      '{"name": "custom-rendezvous-server", "value": "$id"}');
                if (relay != relay0)
                  FFI.setByName(
                      'option', '{"name": "relay-server", "value": "$relay"}');
                if (key != key0)
                  FFI.setByName('option', '{"name": "key", "value": "$key"}');
                close();
              }
            },
            child: Text(translate('OK')),
          ),
        ]);
  });
}

String? validate(value) {
  value = value.trim();
  if (value.isEmpty) {
    return null;
  }
  final res = FFI.getByName('test_if_valid_server', value);
  return res.isEmpty ? null : res;
}